Apparatus for testing milk and milk products.



J. W. MITCHELL & W. O. WALKER.

APPARATUS FOR TESTING MILK AND MILK PRODUCTS.

APPLICATION FILED JAN. 2, 1909.

UNITED STATES, pm a JOEL WALTER mrcEELL AND WILLIAM OSCAR WALKER, 0E KINGSTON, ONTARIO,

' CANADA.

APPARATUS FOR TESTING MILK AND MILK PRODUCTS.

To all whom it may concern: 1 Y Be it known that we, JOEL WALTER MITCH ELL and WILLIAM OSCAR WALKER, both of the city of Kingston, in the county of Frontenac, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Apparatus for Testing Milk and Milk Products, of which the following is the specification.

Our invention relates to improvements 1n an apparatus for testing milk and mlk products, and the object of the invention IS tO devise an apparatus of this class, which will automatically add the water to the contents of the testing bottles while the machine is in motion, so that the testing may be accomplished expeditiously and thereby effect a saving in time and labor.

A further object is to make the machlne of simple construction and readily attached to machines already in use.

A still further object is to insure of the machine and the testing bottles being kept clean and sanitary. L I

Our invention consists of a central shaft, a spider comprising a series of arms mounted thereon and provided with end trunnions, cups arranged in pairs and swung on the trunnions between adjacent arms, testing bottles held in the cups and provided with a graduated neck and a filling neck, a centrifuge comprising a casing having upper and lower rows of orifices located on the same plane as the filling necks and a deflecting strainer located at the top of the centrifuge, the parts being otherwise arranged'and constructed in detail as hereinafter more particularly explained.

Figure 1, is a perspective view of our improved apparatus partially broken away and in section. Fig. 2, is a sectional plan showing portion of the cups and bottles, the bottles being shown in full. Fig. 3, is a detail of the centrifuge. Fig. 4, is a perspective detail of the bottle. Fig. 5, is a longitudinal section through the bottle and necks thereof.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is a spider, which is journaled on a shaft B and comprises arms A bent at the outer end at A substantially at right angles to the main portion of the arm.

C are trunnions secured in the end of the arm and D are a pair of semi-cylindrical Specification of Letters Patent. Application filed January 2, 1909. Serial No. 170,478.

run I) having the centrally 'which a funnel G is cups, which are provided with a connecting opposed lugs D WhlCll are ournaled on the trunnions C.

E are the bottles, which are placed in the cups D. Each bottle is provided with a graduated neck E and a substantially funnel or cone-shaped neck E having a beveled outer end E The position in which the cups and bottles are shown in the drawing s that which they assume when the machine is in motion. When the machine is stationary the cups and bottles stand upright.

F is the centrifuge, which comprises a cylinder having upper and lower sets of perforations F and F in its periphery, each set of perforations being substantially of the same Width as the outer end of the funnel-shaped neck E of the bottle E. As will be readily seen there are two layers of bottles, which assume the horizontal position when the machine is in motion and consequently the upper and lower necks E are directly opposite the upper and lower sets of perforations F" and F respectively.

F is the center tube of the cylinder, which 1s secured on the shaft B.

F 4 is a deflecting plate horizontally dis posed beneath the top of the centrifuge F and opposite the flanged opening F into fitted in order to feed the water into the centrifuge.

H is a strainer of wire gauze extending from the flange F to the deflectmg plate F such wire gauze being designed to prevent dust or foreign matter passing into the centrifuge and stopping the jets F or F Both the centrifuge and the spider carrying the bottles are secured to the shaft or netting and rotate in unison. As the machine revolves the water in the centrifuge is forced by the centrifugal action outwardly in the form of a spray and is caught by the coneshaped necks of the bottles circularly arranged as will be readily understood.

The inner ends of the funnel or coneshaped necks of each bottle are extended in somewhat the form of a curve E at its entrance into the bottle for the purpose we shall presently describe.

The milk is first placed in the bottle through the funnel-shaped neck. Sulfuric acid of about equal quantity is then poured through the funnel-shaped neck and passes along to one side of the bottle separate from the milk, thereby preventing the churning Patented Mar. 28, 1911.

of the milk, The sulfuric acid and milk are then commingled by shaking. After the number of bottles re uired to fill the machine have been place in the cups the machine is set in motion and the bottles assume the position shown in the drawing. The water is then poured into the funnel G and the centrifugal force throws such water outwardly as hereinbefore described into the cone-shaped necks, thereby quickly forcing the butter fat up the graduated tube for the test. The water as it passes outward in the form of a spray is caught by the beveled end of the cone-shaped neck, which cuts across the streams of spray. The high side of the beveled neck is on'the side of the bottle forward as to direction of rotation. As the low side is within the end of the graduated neck itwill be understood that there will be no liability of the overflow of the butter fat from the open end of the graduated neck,

From this description it will be readily understood that we produce an apparatus, which is very simple in constructlon and readily attached to machines already in use. Another advantage in the construction of the bottle, which we use in our machine, is that the fat cannot escape through the coneshaped neck as it is of reduced size at the end of the neck and has a bend or turn inside of the bottle. Neither can the butter fat escape from the graduated neck as will be able necks for receiving the liquid from the centrifuge. v

2. An apparatus for testin milk and milk produce comprising a centri ge cylindrical in form and provided with perforations in the periphery and an u per opening, a deflecting plate located be ow the opening, a circumferential strainer extending from the bottom of the deflecting plate to the openin and bottles supported on suitable arms an provided with suitable necks for receiving the liquid from the centrifuge.

JOEL WALTER MITCHELL. WILLIAM OSCAR WALKER. Witnesses:

E. K. MAUND, M. B. CUNNINGHAM. 

